NXP Semiconductors TDA8932B - Manual (Page 8)

TDA8932B_4 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 04 — 18 December 2008 8 of 48
NXP Semiconductors
TDA8932B
Class-D audio amplifier
(1)
Where:
f
osc
= oscillator frequency (Hz)
Rosc = oscillator resistor (on pin OSCREF) (
Ω
)
Table 5 summarizes how to configure the TDA8932B in master or slave configuration.
For device synchronization see Section 14.6 “Device synchronization” .
8.4 Protection
The following protection is included in the TDA8932B:
• Thermal Foldback (TF)
• OverTemperature Protection (OTP)
• OverCurrent Protection (OCP)
• Window Protection (WP)
• Supply voltage protection:
– UnderVoltage Protection (UVP)
– OverVoltage Protection (OVP)
– UnBalance Protection (UBP)
• ElectroStatic Discharge (ESD)
The reaction of the device to the different fault conditions differs per protection.
Fig 5. Oscillation frequency as a function of resistor Rosc
Table 5. Master or slave configuration
Configuration Pin
OSCREF OSCIO
Master Rosc > 25 k
Ω
to V
SSD(HW)
output
Slave Rosc = 0
Ω
; shorted to V
SSD(HW)
input
f
osc
12.45 10
9 ×
Rosc
---------------------------- =
350
450
550
f
osc
(kHz)
250
Rosc (k Ω )
25 45 40 30 35
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